Engine control means



March 21, 1961 J. H. HOLLYDAY 2,975,650

ENGINE CONTROL MEANS Filed June 23, 1959 3 Sheets-Sheet 1 IN YE N TOR 32 Jjms fl. #0 may March 21, 1961 J. H. HOLLYDAY 2,975,650

ENGINE CONTROL MEANS Filed June 23, 1959 I 5 Sheets-Sheet 2 I I II}.

INVENTOR ya f/oLLYpAY March 21, 1961 J. H. HOLLYDAY 3 Sheets-Sheet 3 //VVENTOR Jam's H. HOLLYDAY AT omvsr ENGINE CONTROL MEANS James H. Hollyday, New Holland, Pa., assignor to Sperry 'llgand Corporation, New Holland, Pa., a corporation of elaware i Filed 1m 23, 1959, Ser. No. 822,318 Claims. (CL 74-472 This invention relates to improvements in engine control means and, more particularly, to control means for an internal combustion engine carried by an agricultural implement tov furnish auxiliary power thereto for purposes of actuating part of the implement.

2,975,659 7 Patented Mar. 21,1961

ment or clutching and throttle operation for auxiliary engines carried by agricultural implements to actuate certain parts of the mechanism requiring operating power not otherwise supplied by the tractor.

It is obvious from the foregoing that the control means for an auxiliary engine on an agricultural implement as presently used are cumbersome and unhandy and, in

general, do not render the engine quickly responsive to actuation by such control cords and cables. There is an added difiiculty that the cords and cables can become fouled and kinked, as well as broken, thereby impeding and interrupting operation of the engine thereby.

It is common practice in agricultural power equipment at present to provide a power take-off, commonly referred to as a p.t.o., usually comprising a shaft projecting at an appropriate location from the chassis of a tractor, for example, whereby when an agricultural implement is hitched to the tractor for purposes of drawing the implement through a field, for example, it also is possible to connect the portion of the implement which requires power actuation to the p.t.o. on the tractor in order that the agricultural implement may be operated as desired. Providing a p.t .o. arrangement on a tractor however usually necessitates that the tractor have greater power than that which normally would be required only to propel theimplei'nent through a field. Hence, where an individual farmer does not desire to purchase a socalled high power tractor, -as wella's in situations where a farmer may own a tractor notequipped with a"p.t.o., it is common practice'at present'under such circumstances to provide agriculturalimplements with independent sources of power such as that supplied by anauxiliary internal combustion engine mounted directly upon said implement and carried thereby.' I r The operation of an agricultural implement by an auxiliary internal combustion engine, for example, carried' directly by said implement presents problems in regardto controlling the operation of such engine in order-that the implement may be operated as desired by the drivers of'th'e tractor, for example, which propels the implement but does not furnish operating power thereto. In such arrangements, it is necessary that control means be positioned within ready access of the operator'of the tractor in order that the driver adequately and conveniently may control the operation of the engine of the implement, particularly to establish'or dis-establish driving relationship betweenthe' engine and the implement to render: the implementrespectively operable and idle, as well'as' to elfect the desired speed of the engine and 'correspon'clingly-ofthe parts of the implement driven by said engine. Y i

It-ha's beenthe practice heretoforeffto eontrol tlie drive. establishing or clutching and throttle mechanismof"such auxiliaryengines by cables andbtherflexible me'a'ns, portionsof which we're maintained within access of the driver offtheti'actor' by suitable brackets and supports extending upward :for example'from the hitching means clutch means 'in one' directionpthere will have to be an directon unless for examplqthe first movementis against 7 the action of 'a spring, whereby theL-s ringmay afEect V 'suclrs'econdmovementwhenthe cord or cableiis released for example." It is 'to be understood of course that such illustration-"is merely "onelexa'mple" of 5a number which presently are -in use particularly to eitect*drive establish:

It is the principal object of the present invention to provide simple control means for the auxiliary engine of an agricultural implement, which control means has a dual function of operating drive establishing means as well as the throttle of such auxiliary engine.

A further object of the invention is to provide such dual purpose control means with a single operating shaft supported for axial movement as well as for rotation about said axis, whereby said two different types of movement of said shaft means, or movement in two different directions, respectively may be used to actuate the drive establishing means and throttle means of the engine.

A further object of the invention is to provide a simple type of toggle mechanism for supporting and moving a tightening roller against a drive belt constituting part of the drive establishing means of an auxiliary engine for connection to mechanism on an agricultural implement to be driven thereby, said toggle mechanism being operated by the actuating shaft of the invention when said shaft is rotated about its axis and there being an overcenter arrangement associated with the toggle mechanism, whereby the drive establishing means is automatically held in condition to establish driving relations to said mechanism when the operating shaft is rotated to its fullest intended extent in one direction.

Still another object of the inventionis to provide pivoted lever means interconnected to the throttle of an auxiliary gasolineengine for example, said pivoted lever means being interconnected to the actuating shaft and operated thereby in opposite directions when said shaft is moved axially in opposite directions, thereby to control the speed of the engine between its upper and lower manner that said shaft extends generally toward the forward end of the implement, whereby a simple operating rod may be connected thereto, by universal joint for example, if desired, theforward end of said rod preferably having a handle thereon which is supported within easy a ccess of'the driver of a tractor to which the implement is hitched, whereby both rotation and axial movement, of said rod respectively will cause corresponding movement of the actuating shaft of the. control means comprising the present invention.

7 ,Details of the foregoing objects and of the invention, as well as other objects thereof, are set forth in the follow ing specification and illustrated in the accompanying drawings comprising a part thereof. 1

'In the drawings:

Fig.1 is a frontelevation of a portion of an exemplary agricultural implement upon which an auxiliary, internal combustion engine is' mounted, control mechanismtor the drive establishing means and throttle means of the jengine being clearly illustrated and .in which figure the 7 -drive-establishingmeans is shown in idle position;

nism illustratedjn Fig. 1; -Fig.. 3' isf a view'similar to Fig. 1 but. showing the Fig. 2 is a fragmentary top plan view of the mechae "genetic mechanism for the throttle means being located in a different position from that shown in Fig. 2, whereby Figs.

2 and 4 respectively illustrate different operating positions of the throttle means for the engine.

'Fig. 5 is an enlarged vertical sectional elevation taken on the line 5-5 of Fig. 3.

Figs. 6 and 7 respectively are enlarged top plan and front vertical elevations of the actuating mechanism for the throttle means of the engine, the mechanism shown in Figs. 6 and 7 being similar to that shown in the preceding figures except that it is on a considerably larger scale.

Although the present invention primarily is an improved control means for the drive establishing means and throttle means of an auxiliary internal combustion engine used on an agricultural implement, it is to be understood that the principles of the invention are applicable to an internal combustion engine connected to other types of mechanisms and particularly portable mechanisms which, for example, may be coupled to propelling means such as a tractor and it is necessary to control the operation of the auxiliary engine from the drivers seat of the tractor. In fact, the control means comprising the present invention are applicable to regulate and control the operation of an auxiliary internal combustion engine located remotely from the person who is to controlthe operation thereof, whether the engine is mounted upon a portable mechanism or otherwise.

However, inasmuch as the invention is especially suited for the control of portable agricultural implements requiring auxiliary power to be supplied by an internal combustion engine carried by the implement, the details of the invention will be described in the following specification and are illustrated in the accompanying drawings in relation to an exemplary agricultural implement comprising a portable hay baler. I

Referring particularly to Figs. 1 through3, the exemplary agricultural implement is represented, figuratively,

by only a bale case 10 of a hay baler ofconventional construction. Mounted adjacent said bale case is a driven shaft 12 upon one end of which a combination fly-wheel pulley 14 is mounted. It will be understood that the shaft 12 is connected to mechanism to be driven thereby on the baler, which is not illustrated, and the baler also has a suitable platform upon which the base 16 'of an auxiliary internal combustion engine 18 is mounted. In relation to an actual hay baler, the engine 18 preferably is mounted adjacent the forward end thereof and substantially in line with the tongue of the baler.

The engine '18 also has a carburetor 20 mounted thereon as shown in Figs. 1 and 3, said carburetor 20 having a conventional throttle which is actuated by throttle rod 22. The drive shaft 24 of the engine has a pulley 26 thereon and endless, flexible belt-like means 28 extend around the fly-wheel pulley 14 connected to the driven shaft 12 and the engine pulley 26. Normally, the beltlike means 28, which may comprise a series of flexible, V-belts, for example, extend loosely around the pulleys 14 and 26, especially in the inoperative or non-driving condition thereof as'illustratedin Fig. 1. Under such conditions, the pulley 26, for example, will slip relative to the belt-like means 28, thereby rendering the shaft 12 inoperative. i I v The control mechanism for both the drive establishing meansandthrottle means of the engine 18 essentially comprises an actuating rod or shaft 30, which may be tubular or solid, and is supportedso as to'extendbetween a pair of elongated plates 32 comprising part of a frame. The plates '32 are spaced apart as is clearly shown in Figs. '2 and 4 through 6; '2 The lower' 'e'ndsof the plates 32' are apertured to receivera supporting shaft in Fig. 2. The opposite ends of the links 36 are apertured to receive an elongated bolt or pin 38 extending between and through the outer ends of 'flat links 36 and by which the latter ends of the flat links 36 are pivotally connected to the lower end of a curved toggle link 40.

The bolt or pin 38 which extends between the outer ends of the flat links 36 rotatably supports bclt'te'nsioning roller 42 which is engageable with-the outer'surface of belt-like means 28 as clearly shown in Figs. 1 and 3. Further, it will be seen that the lower end of curved toggle link 40 is provided with a plurality of apertures 44 extending in a longitudinal series to provide for adjustment of the link 40 relative to the belt-tensioning roller 42. The upper end of toggle link 40 is apertured to receive one end of a pin 46 which extends between and is fixed, such as by welding, to the outer ends of a pair of parallel, flat toggle links 48. The upper end of toggle link 40 may be held upon pin 46 by any suitable means such as a cotter pin 50 such as shown in Figs. 5 through7.

The frame comprising the fixedly mounted elongated plates 32 is supported at its upper-end in fixed relationship to the engine 18 by means of a suitable bracket 52 shown in Figs. 1, 3 and 6. Said frame slidably and rotatably supports the actuating shaft 30,- as described above, and fixed to said actuating shaft 30 is a control lever 54 which is apertured atone end to receive the actuating ,shaft 30 and is firmly connected thereto by a weldment 56. The'opposite end of control lever 54 is provided with an aperture 58 which slidably receives the pin 46 comprising part of a toggle frame .which otherwise includes toggle links 48.

stood that the opposite end of manipulating rod 60 will extend conveniently'to the drivers seat-of a tractor for example, whereby a handle, not shown,'may be'provided on said opposite end for manual manipulation of rod 60 by the driver of a tractor. Hence, when the actuating shaft 30 is rotated about its axis by means of manipulating rod 60, such rotation of shaft 30 Will-cause corresponding rotating movement of control lever 54 so asto effect corresponding pivoted movement of both of the toggle links 48, the inner ends of which are provided with hearing apertures 62 respectively receiving the fixed bearings 37 which are carried by the upper ends of elongated plates 32.

Assuming, for example, that the toggle links '48 initially arein the so-called inoperative or non-driving position shown in Fig. 1, and are rotated counter-clockwise to said figure, they will be moved to the position thereof shown in Fig. 3. As a result of such movement, the curved toggle link, 40 will be raised and the concave side of the curve thereof will accommodate the actuating shaft 30 as .shown in Fig. '3, while-the elevation of the lower-end of toggle link 40 will cause an elevation of the belttensioning roller 42 which' results .in rendering the-beltlik'e means 28-taut about the pulleys 14 and26 so as to establish driving conditions between the. engine18 and the driven shaft; 12 so as to cause operation of certain mechanism of the baler 10 by the auxiliary engine :18. It

,will be noted further: from. Fig. 3 that when the toggle 48nhave been moved to 'the:position shown itherein,

lower end to saidplate.

s the pin-46 will be moved past the centers of shaft 30 and bolt 38 which supports the roller 42,,whereby the roller 42 automatically will be maintained in such position as a result of the over-center condition of the various pins and shafts referred to above.

To dis-establish driving conditions between the shaft 12 and the engine 18, it is only necessary to move the actuating shaft 30 about its axis in clockwise direction as viewed relative to Figs. 1 and 3, whereby the toggle links 48 will be restored to the position thereof shown in Fig. 1 so as to effect an idling or inoperative relationship between the engine 18 and the mechanism of the agricultural implement to be driven thereby. Such movement of thetoggle links 48 to, establish inoperativeness preferably I is halted by;engagement ofa stop. pin 64, best shown in Figs. 6 am! f7,'1withone1side edge of the forward elongated-plate32.

Pivotal movement of the toggle links 48 in drive: establishing direction, the over-center position of ;which;\- isillustrated in Fig. 3, is limited by engagement of plate 32 with link 40. It will also be noted that plate 32 is adjustable relative to bracket 52 by means'of a slot 94 in the bracket which receives bolt 96 extending through a suitable aperature in the rearmost elongated plate 32. By loosening the nut uponbolt-96 and adjusting the angular position of the elongated plates 32 relative to bracket 52, it will be seen that the engagement of, one edge of control lever 54 with the inner end of slot 80 can be adjusted. This adjustment is provided so'that when the engine is adjusted on the bale case to proper position, the control mechanism can be oriented properly relative thereto. r 7

Also supported by the engine 18. is a bracket 66 which has a horizontal plate 68, one edge of which has a vertical flange 70 provided with a notch 72. Carried by the plate 68 is a vertical pin 74 which ,is fixed at its An actuating lever 76 is apertured intermediately of its ends to receive the pin 74 when the lever 76 is mounted inoperative position, preferably flatwise, against the upper surfaceof plate 68 of the bracket 66 as clearly shown in Fig. 7.' One end of actuating lever 76 is provided with a cam 78 which extends angularly upward from the plane of lever 76 as best shown in Fig. 7. The opposite end of lever 76 is provided with an elongated notch 80 which, as best seen in Fig. 6, receives thesemi-circular periphery of the inner end of control lever 54, whereby axial movement "of the actuating rod' will effect pivotal movement of the actuating lever 76 about the axis of pin 74.

Also supported for oscillation about the pin 74 is a throttle lever 82. It will be seen that the throttle lever 82 is pivotally supported intermediately of its ends and one end is 'apertured to receive a downturned end 84 of throttle rod 22; The opposite end of lever 821has a pin 86 fixed to and depending from the lower surface'thereof, said pin 86 being received within an arcuate slot 88 in actuating lever 76 as. best shown in Fig.6. The levers 76 and 82 are somewhat loosely mounted upon thepin 74 so that they may be oscillated relatively freely about said pin and it is also intended that the uppermost throttle lever 82be capable of being moved slightly vertically upon the pin 74. To this end, a. coil spring 90 extends between an adjustable nut 92 and the upper surface of throttle lever 82 so as .to exert adequate pressure upon lever. 82 to'r'naintain the outer end of said lever within the notch 72.. When inthis position, the throttle rod 22 will maintain the engine 18 atan accelerated speed;

When the baler is operating but is not bialing material,

7 it usually is desirable to decrease the speed of the engine 1 18, whereupon the actuating shaft 30 is moved axially forwardly relative to the engine 18, or downwardlyas vieweclin'Fig. 6, whereby the 'control'lever 54 isfmoved and the bearing aperture 58 and the outer end of control lever 54 slides freely upon the pin 46; Such movement of control lever 54 causes clockwise movement of actuating lever 76 as viewed in Figs. 2 and 6, the slot 88 initially permitting pivotal movement of the lever 76 relative to throttle lever 82.

Such initial movement is adequate to cause cam 78 to engage the undersurface of throttle lever 82 and elevate the lefthand end of the sameas viewed in Figs. 2 and 6 from the notch 72, whereby continued pivotal movement of the actuating lever 76 .will cause the pin 86 to engage the opposite end of slot 88 in actuating lever 76, thereby causing clockwise movement of throttle-lever 82 to the positionthereof shown in exemplary manner in Fig. 4.

Such movement of the throttlelever 82 results in decelerating the engine -toidlingspeed. Axial movement of :lthe actuating shaft 30 from the position shown in Fig. 5 re the p'ositicn shown in Fig 6, when for example the driven shaft 12 is in driving engagement with the engine .18, will'cause the throttle lever 82 to be restored to its engine-accelerating position, in which position it will be retained by positioning notch 72, until the engine next is to be decelerated in speed. Normally, the engine will be accelerated prior to being drivingly connected to the driven shaft 12. The control arrangement provided by the invention readily permits this.

From the foregoing, it will be seen that the present invention provides a single control member which is I mounted for movement of several kinds, specifically axial and pivotal, one of such movements controlling the operation of the throttle means of an internal combustion engine, for example, andthe other movement controlling drive establishing and dis-establishing relationship between said engine and mechanism tobe driven thereby on an agricultural implement. .Such. control means eliminates the need for flexible cords, cables and thelike which have been used heretofore and, instead, a simple, non-fouling control means is employed requiring only a relatively stilf elongated rod which extends forwardly from a single control or actuating shaft30 employed in the present invention whereby an operator upon a tractor propelling an implement through a field, for example, readily may control all throttle actuating and drive establishing openations of the engine carried by the implement.

While the invention, has beendescribed and illustrated in its several preferred embodiments, and has included a certain details, it wouldbe understood that the invention v towardrthe toggle link 40,"from"the positionshown in Fig. 6. t o the position shown in Fig; 5 ,for example}; .The

a t ewm ve relatives 1 3 e .1

is not to be limited to the precise details herein illustrated and described since the same may be carried out in other ways falling within the scope of the inventionas claimed.

What is claimed is: i

1. An agricultural implement having an engine provided with throttle means to vary the speed thereof and connected by drive establishing means to mechanism on said implement to be operated by said engine, in combination with control means comprising a shaft supported for pivotal and longitudinal movement, a lever fixed to said shaft and projecting radially therefrom, toggle linkage comprising part of said drive establishing means, said toggle linkage being operated by said lever when said shaft is rotated in opposite directions respectively to estabj lish and dis-establish driving relationship between said mechanism and said engine, and said throttle means being interconnected tosaid leverrand operated thereby when said shaft is moved longitudinally of its axis. I

2. An agricultural implement having an engine ,provided with throttle means to vary the speed thereof and connected by drive establishing means to mechanism on i said implement; to be'operated by said engine, said]drive V establishing means comprising a belt-like membe passing around a pair of pulley members loosely and one of said pulley members being fixed to the driveshaftmeans iof saidengine and the other to said mechanism, incombi- ,nation ,with control means comprising a shaft fsuppqrted for pivotal and longitudinal movement, a 16Y 1:fi.l dit0 said shaft and projecting radiallytherefrom, toggle linkage supporting a tightening roller movable by said linkage "to and from a position to engage and tightensaid beltlike 'm emben'relative to said pulley members to effect driving of said mechanism by said engine, said lever being interconnected to said togglemechanism for operation thereof by said lever when said shaft is rotated, and means interconnecting said lever to said throttle means for operation 'ofsaid throttle means when said shaft is moved longitudinally of its'axis.

3. An agricultural implement having an engine provided with throttle means to vary the-sp'eed thereof and connected by drive establishing means to mechanism on said implement to be operated by'said engine, in combination with control means comprising a shaft supported for pivotal and longitudinal movement, a control lever fixed to said shaft and movable therewith, a throttle lever interconnected to said throttle of said engine and engaged by said control lever for operation of said throttle when said shaft is moved axially, and said control lever also being interconnected to said drive establishing means and functioning to operate the same when said shaft is rotated about itsaxis.

4. An agricultural implement having an engine provided with throttle means to vary the speed thereof and connected by drive establishingmeans to mechanism on said implement to be operated by said engine, in combination with control means comprising a shaft supported for pivotal and longitudinal movement, a control lever fixed to and projecting transversely from said shaft and movable therewith, said control lever being interconnected to said drive establishing means and functioning to operate the same when said shaft is rotated about its axis, a jthrottle lever interconnected to said throttle of said engine andsupported for pivotal movement, notch means receiving said lever in idling position, an actuating lever interengageable by said control lever and having cam means engageable with said throttle lever when said shaft is moved axially-in one direction to disengage said throttle lever from said notch means to permit actuation of said throttle means.

5. The agricultural implement combination set forthin claim 4 further characterizedby said actuating lever and control lever'being within planes transverse to each other e and said actuating lever'having a notch in one endand supported for oscillation about a pivot transverse to the plane of said lever and intermediate of the ends thereof, said notch receiving an arcuate portion of said control lever, whereby when said shaft is moved axially said "control lever will effect oscillation of said actuating lever about the pivotal axis thereof to actuate said throttle.

6. An agricultural implement having an engine provided with throttle means to vary the speed thereof and drive establishing means to connect said engine to mechanism on said implement to be operated by said engine, said drive establishing means comprising a belt-like member normally passing loosely around a pair of pulley members of which one is fixed to the drive shaft means of saidengine and the other is connected to said mechanism to bedriven by saidengine, in combination with control means interconnected to said throttle and drive establishing means and comprising a shaft supported for pivotal and longitudinal movement, a lever fixed to said shaft and projecting radially therefrom, pairs ofpivotally connected toggle links spacedapart transversely and supporting a rotatable tightening roller therebetween and movable by said toggle linkage to and from a position to engagejand tighten said belt-likemember to effect driv-.

7. An agricultural implement having an 'engine provided with throttle'means to vary the speed thereof and drive establishing means connecting said engine/to mechanism on said implement to be operated bys'aid'engine,

said drive establishing means comprising a belt-like member normally passing loosely around a pair of pulley members respectively-interconnected to said'mecha'nism and the drive shaft means of said engine, in combination with control means comprising a'shaft supported for pivotal and longitudinal movement, a control lever fixed to said shaft and projecting radially therefrom, toggle linkage supportinga tightening roller movable by said linkage to and from-a position to engage and tighten -said belt-like member relative to said pulley members to effect driving of said mechanism by said engine, said control lever being interconnected to said toggle mechanism for operation thereof by said control lever when said shaft is rotated, and an actuating lever pivotally supported adjacent said'control lever and also connected to said throttle means, said actuating lever also being engageable by said control lever when said shaft is moved longitudinally and operable thereby to actuate the throttle means of said engine.

8. The agricultural implement combination set forth in claim 7 further characterized by said actuating lever and control lever being within planes transverse to each other and said actuating lever having a notch in one end and supported'foroscillation about a pivot transverse to the plane'of saidlever and intermediate-of the ends thereof, said notch receiving an arcuate portion of said control lever, whereby when said shaft is moved'axially said control lever will effect oscillation of said actuating lever about the pivotal axis thereof to actuate said throttle.

9. Theagricultural implement set forth in claim 8 further including a throttle lever interconnected at one end to said throttle means and received within notch means stationary rela'tive'to said engine to maintain saideng'ine in idling condition, means supporting said throttle lever for pivotal movement within a plane substantially parallel to said actuating lever, and cam means on said actuating lever engageable with said throttle lever when said shaft is moved axially in one direction to disengage said throttle lever from said notch means to permit actuation of said throttle means by 'such movement of said shaft.

10. An agricultural implement having an engine provided with throttle means to vary the speed thereof and drive establishing means connecting said engine to mechanism on said implement to be operated by said engine, in combination with control means comprising a shaft supported for pivotal and longitudinal movement, a control lever fixed to said shaft and projecting radially therefrom, toggle linkage comprising part of said drive er tablishing means said toggle linkage being operated by said control lever when said shaft is rotated in opposite directions respectively to establish and dis-establish driving relationship between said mechanism and said engine, stop means on said control lever operable to limit movement thereof in one direction of rotation of said shaft, and an actuating lever interconnected to said throttle and control lever and operable to actuate said throttle when said shaft is moved longitudinally of its axis, said control lever engaging said actuating lever when said shaft is rotatedto its intended limit in the opposite'direction to prevent further movement thereof.

t References Citedin the file of this patent UNITED; STATES PATENTS 

